DeFelsko PosiTest AT v.1.0 - Manual (Page 2)

4. Reposition the template and insert the two attached pins
through the template holes marked No.1 and No.2 and into
the two drilled positioning holes.
5. The template is now positioned to drill either the 20mm or
50mm circle of holes (depending on dolly size) into the coating.
6. After all holes have been drilled into the coating for the
chosen circle size, remove the template and clean debris
from the surface.
7. To complete the drilling process and remove all material
between existing holes, place the template back onto the
surface but rotate so the drilled positioning holes line up with
the template repositioning holes labeled 20mm or 50mm, as
appropriate. Replace positioning pins and repeat steps 5 & 6.
Note: Make sure all holes for the chosen circle size are drilled
completely through the coating to the substrate surface.
Pull Testing
1. Ensure the pressure relief valve on the pump is completely
open
2. Turn the red “drag” indicator on the pressure gauge to zero.
Note: If the black indicator will not return to zero, check to be
sure that pressure has been completely relieved from the
system.
3. Push the actuator
handle completely
down into the actuator
assembly.
4. Place the actuator
assembly over the
dolly head and attach
the quick coupling to
the dolly by reaching
through the holes in
the actuator assembly
and lifting the quick
coupling. Release the
quick coupling when
the dolly head is
completely engaged.
5. Close the pressure
relief valve on the
pump tightly.
6. Ensure the pump is on
a well-supported
horizontal surface. If it
is necessary to place
the pump on a vertical
surface, position the
unit so the pump hose outlet is in the down position to
prevent air from being pumped into the actuator.
7. Begin pumping the pump handle until the black indicator on
the pressure gauge starts to move. Continue pumping at a
uniform rate of no more than 1 MPa (150 psi) per second
until the actuator pulls the dolly from the coating.
8. Immediately following the pull, open the pressure relief valve
on the pump to release the pressure. The red “drag”
indicator on the pressure gauge will maintain the maximum
pressure reading.
Note: An imprecise return of the black indicator to zero does
not necessarily mean the gauge is out of calibration. If all
pressure has been relieved but indicator still does not return
to zero, simply tap the gauge on its case with a finger or
elevate pressure and release again.
9. Record the pull off pressure and mark the dolly for future
qualitative analysis.
Analyzing Results
Test results can be considered 100% valid when the coating is
completely removed from the substrate and remains adhered to
the adhesive on the dolly. When only a portion of the coating is
removed, specific results should be analyzed including the
fracture pattern to determine the cohesive properties of the
coating and adhesion properties between the dolly and adhesive,
adhesive and coating, distinct coating layers, and coating and
substrate.
Maintenance
Refer to the Pump Operating Instructions (included) for
maintenance information.
Warranty
The manufacturer fully warrants its products against defects in
workmanship or materials for a period of one year from date of
purchase. In the event that a tester is found to be defective,
return the product with proof of purchase to your dealer, and the
defective product will be repaired or replaced at the
manufacturer’s option.
No responsibility is assumed for incidental or consequential
damages.
The warranty is voided if the tester or its components have been
disassembled or tampered with.
Data subject to change without notice
© DeFelsko Corporation USA 2000 • All Rights Reserved • Patents applied for • Printed in USA
This manual is copyrighted with all rights reserved and may not be reproduced or transmitted, in
whole or part, by any means, without written permission from DeFelsko Corporation.
DeFelsko and PosiTest are trademarks of DeFelsko Corporation registered in the U.S. and in
other countries.
Every effort has been made to ensure that the information in the manual is accurate. DeFelsko is
not responsible for printing or clerical errors.
DeFelsko Corporation
802 Proctor Avenue, PO Box 676
Ogdensburg, NY 13669 USA
Tel: 315-393-4450 – Fax: 315-393-8471
Email: [email protected] – web: www.defelsko.com The Measure of Quality